GB/T 33729-2017 in English

《GB/T 33729-2017纺织品 色牢度试验 棉摩擦布》由TC209（全国纺织品标准化技术委员会）归口，TC209SC1（全国纺织品标准化技术委员会基础标准分会）执行，主管部门为中国纺织工业联合会。

ChinaStandards.net is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.

This standard is developed in accordance with the rules given in GB/T 1.1-2009.

This standard is modified in relation to ISO 105-F09:2009 Textiles — Tests for colour fastness — Part F09: Specifications for Cotton Rubbing Cloth (English Version) by redrafting method. The following main technical differences have been made with respect to ISO 105-F09:2009:

——The international standards specified in Normative References are replaced by corresponding national and professional standards of China to adapt to China's technical conditions.

The following editorial modifications present in this standard:

——The name of standard has been modified to "Textiles — Tests for colour fastness — Cotton rubbing cloth";

——"Reference fabrics can be obtained from specified supplies" in Clause 1 has been deleted;

——The notes on supplier information in 3.2 and 3.3 herein have been deleted;

——Notes have been added in 4.3 herein to provide the standard of oil content test method for the convenience of standard use;

——Notes on product information in 4.4 and 5.2 herein have been deleted;

——FZ/T 20002 has been added to the references herein.

This standard was proposed by the China National Textile and Apparel Council.

This standard is under the jurisdiction of the National Technical Committee on Textiles of Standardization Administration of China (SAC/TC 209).


Textiles — Tests for colour fastness — Cotton rubbing cloth

1 Scope

This standard specifies the specifications and requirements of cotton rubbing cloth used to evaluate dyed cotton rubbing cloth in the rubbing colour fastness test of textiles.

The dye performance of cotton rubbing cloth to be tested is determined by comparing it with cotton reference rubbing cloth dyed with cotton reference fabric.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendment) applies.

GB/T 250 Textiles — Tests for colour fastness — Grey scale for assessing change in colour (GB/T 250-2008, ISO 105-A02:1993, IDT)
GB/T 3920 Textiles — Tests for colour fastness — Colour fastness to rubbing (GB/T 3920-2008, ISO 105-X12:2001, MOD)
GB/T 4669 Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area (GB/T 4669-2008, ISO 3801:1977, MOD)
GB/T 7568.2 Textiles — Tests for colour fastness — Standard adjacent fabrics — Part 2: Cotton and viscose
GB/T 7573 Textiles — Determination of pH of aqueous extract (GB/T 75732009, ISO 3071: 2005, MOD)
GB/T 8424.1 Textiles — Tests for colour fastness — General principles for measurement of surface colour (GB/T 8424.1-2001, eqv ISO 105-J01: 1997)
GB/T 8424.2 Textiles — Tests for colour fastness — Instrumental assessment of relative whitenss (GB/T 8424.2-2001, eqv ISO 105-J02:1997)
FZ/T 01024 Textiles —Tests for colour fastness — Instrumental assessment of change in colour for determination of grey scale rating (FZ/T 01024-1993, neq ISO 105-A05:1992)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
cotton rubbing cloth under test
cotton rubbing cloth complying with the requirements of Clause 4

3.2
cotton rubbing cloth reference fabric
cotton reference cloth fabric complying with the requirements of Clause 4

3.3
cotton dyed reference fabric
cotton dyed reference fabric complying with GB/T 7568.2 and dyed with C.I. Direct Blue 71

4 Specification for cotton rubbing cloth

4.1 Mass per unit area : (110± 5) g/m2, determined in accordance with GB/T 4669.

4.2 Whiteness value:

Y10 = 89 ± 2

W10 = 78 ± 3

TW, 10 = -1 ± 1

Colour measurement shall be made with the specular component in accordance with GB/T 8424.1, excluding spectrophotometric colorimeter with 0/45 (45/0) geometry. Brightness value (Y10), whiteness value (W10) and tint (TW, 10) value shall be calculated using the standard illuminant CIE D65 and CIE 1964 supplementary standard colorimetric system (10° observer) in accordance with GB/T 8424.2.

Measure the whiteness degree of at least a four-layer cotton rubbing cloth to obtain a uniform whiteness value.

4.3 Residual oil content: less than 1 %.

Note: Refer to FZ/T 20002 for the tolerance.

4.4 The pH of aqueous extract: 7.5 ± 1.0, determined in accordance with GB/T 7573.

5 Assessment of staining properties of cotton rubbing cloth under test.

5.1 General

As cotton rubbing cloth are required to yield reproducible results when used in color fastness to rubbing tests, their most important property is standardized staining performance. The staining performance of the cotton rubbing cloth under test shall conform to those of the cotton rubbing cloth reference fabric when performing color fastness to rubbing tests on the cotton dyed reference fabric.

5.2 Test procedure

Conduct dry(wet) friction test with one piece of cotton rubbing cloth under test (3.1) and one piece of cotton rubbing cloth reference fabric (3.2) in accordance to the method specified in GB/T 3920, and evaluate the colour difference between the tested cotton rubbing cloth under test and the cotton rubbing cloth reference fabric.

Conduct 10 groups of dry tests and 10 groups of wet tests in accordance with this test procedure.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Specification for cotton rubbing cloth
5 Assessment of staining properties of cotton rubbing cloth under test.
Bibliography